Java 小白提问，这段代码是标准 RSA 加密吗

对加密方面不太熟，请大佬帮忙看看

public static String encryptByPublicKey(String source, byte[] key) throws Exception { byte[] data = source.getBytes("utf-8"); byte[] keyBytes = key; X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance("RSA"); Key publicKey = keyFactory.generatePublic(x509KeySpec); Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding"); cipher.init(1, publicKey); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; int i = 0; while (inputLen - offSet > 0) { byte[] cache; if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); } else { cache = cipher.doFinal(data, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_ENCRYPT_BLOCK; } byte[] encryptedData = out.toByteArray(); out.close(); return (new String(Base64.encodeBase64(encryptedData), "UTF8")).replaceAll("\r\n", ""); }